AI CSS Animations

Figure Eight Dots Loader

A head dot and five fading followers loop an upright figure eight. The path is a 1:2 Lissajous curve made from two sine-eased axes, so no SVG path or offset-path is needed.

Also known as: lissajous dots loader, figure 8 loader, looping dots trail.

HTML

<div class="ldr-figure-eight-dots" role="status" aria-label="Loading">
  <span style="--k:0"></span><span style="--k:1"></span><span style="--k:2"></span>
  <span style="--k:3"></span><span style="--k:4"></span><span style="--k:5"></span>
</div>

CSS

.ldr-figure-eight-dots {
  --s: var(--ldr-size, 48px);
  --c: var(--ldr-color, #3b82f6);
  --d: calc(var(--s) / 5.5);
  position: relative;
  width: calc(var(--s) * 0.9);
  height: calc(var(--s) * 1.2);
}
.ldr-figure-eight-dots span {
  position: absolute;
  top: calc(50% - var(--d) / 2);
  left: calc(50% - var(--d) / 2);
  width: var(--d);
  height: var(--d);
  animation: ldr-figure-eight-dots-y 1s cubic-bezier(0.37, 0, 0.63, 1) infinite alternate;
  animation-delay: calc(var(--k) * 0.1s - 0.6s);
}
.ldr-figure-eight-dots span::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--c);
  opacity: calc(1 - var(--k) * 0.15);
  animation: ldr-figure-eight-dots-x 0.5s cubic-bezier(0.37, 0, 0.63, 1) infinite alternate;
  animation-delay: calc(var(--k) * 0.1s - 0.85s);
}
@keyframes ldr-figure-eight-dots-y {
  from { transform: translateY(calc(var(--s) * -0.5)); }
  to   { transform: translateY(calc(var(--s) * 0.5)); }
}
@keyframes ldr-figure-eight-dots-x {
  from { transform: translateX(calc(var(--s) * -0.34)) scale(calc(1 - var(--k) * 0.12)); }
  to   { transform: translateX(calc(var(--s) * 0.34)) scale(calc(1 - var(--k) * 0.12)); }
}

@media (prefers-reduced-motion: reduce) {
  .ldr-figure-eight-dots, .ldr-figure-eight-dots *, .ldr-figure-eight-dots::before, .ldr-figure-eight-dots::after, .ldr-figure-eight-dots *::before, .ldr-figure-eight-dots *::after {
    animation-duration: 3s;
  }
}

Customizing this loader

  • Color: set --ldr-color on the element or a parent. Currently previewing #3b82f6.
  • Size: set --ldr-size. Every dimension in the snippet is derived from it. Currently previewing 64px.
  • Speed: change the duration on the animation shorthand. Delays on the children are relative, so they keep their rhythm.
  • Accessibility: the root carries role="status" and an aria-label so screen readers announce the wait. The reduced-motion rule at the end slows the animation for users who asked for less motion.

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